Variable-speed driving mechanism.



L. SCHORSCH.

VARIABLE SPEED DRIVING MECHANISM. APPLICATION FILED JAN-15.1915.

1 206,599. Patented Nov. 28, 1916.

2 SHEETS-SHEET 1.

m: NORRIS Prrlns m. rnomuma. vusnmaynu. n. c

L. SCHORSCH.

'VARIABLE SPEED DRIVING MECHANISM.

APPLICATION FILED JAN-15.1915.

1,206,599, Patented Nov. 28, 1916.

2 SHEETSSHEET 2.

martian scram-es rad ans LUDWIG SCHOJRSGI-I, 0F BIALA, AUSTRIA-HUNGARY, ASSIGNGR TO THE FIRM: OF G. J'OSEPHYS EBBEII, QF BIELI'IZ, AUSTRIA-HUNGARY.

VARIABLE-SPEED DRIVING MECHANISM;

Application filed January 15, 1915.

To all whom it may concern Be it known that I, LIIDWIG SGI-IORSGH, subject of the Emperor of Austria-Hungary, residing at Biala, Galicia, Austria Hungary, have invented certain new and useful Improvements in Variable-Speed Driving Mechanism, of which the following is a specification.

The growing use of ring spinning and ring twisting machines, and the greater demands made on such machines, have given rise to the necessity of running the spindles at varying speeds for the purpose of equalizing as far as possible the differences in the tension of the yarn in winding on thin yarn tubes, and in building the bottom and nose of the cop. It has already been proposed to effect this object partly by direct driving by regulable single phase or three phase commutator motors, and partly by indirect driving by means of belts &c.

' The present invention has for its object to apply in an improved manner to ring spinning and ring twisting machines certain means which have already been employed in self-acting mules for producing the socalled double and triple spindle speeds.

In the accompanying drawings e-Figure 1 is a vertical longitudinal section of one i embodiment of this invention, only so much of the accessory parts of the machine to which it is applied being shown as is required for the understanding of the inven tion. Fig. 2 is a similar view of another embodiment. Fig. 3 is a diagrammatic view of an endless rope drive used in both forms of the machine. F igs, a and 5 are detail views, showing the parts in different posi-' tions, of an automatic clutch shown in Fig. 2.

Referring to Figs. 1 and 2, A is the frame of the machine, in the lower part of which is mounted the drum shaft H, while on the top of the frame bearings? for the countershaft V are fixed.

To the end of the shaft H the pulley W is fixed and on the corresponding end part of the countershaft V the two pulleys W W are arranged; the drum shaft H is driven by an endless rope passing around the said pulleys and an auxiliary pulley P as shown in Fig. 8. Power from the driving shaft D is transmitted to the countershaft V from which the power is transmitted through the rope drive to the drum shaft.

Specification of Letters Patent.

Patented Nov. 28, 1916.

Serial No. 2,430.

According to Fig. l the variation of the speed may be effected by means of only one belt R which may be shifted by belt shifter fork G. This method of driving in its operation is as follows: The first speed pulley S is fixed directly by the side of the loose pulley L on the countershaft, on the front end of which the change speed rope pulley N, is mounted. The second speed pulley S is mounted on a sleeve C which has a front flange, on which behind the rope pulley WV, is mounted the change speed rope pulley XV, At the beginning of the building of the cop bottom the belt R is shifted from the loose pulley L on to the first speed fixed pulley S which drives the drum shaft through the small rope pulley W,, at the first speed. lVhen the cop bottom has been built to a suiiicient extent the belt is shifted from the pulley S on to the pulley S and is then driven through the sleeve G of the.

large rope pulley whereby the drum shaft H is ca used to run faster in accordance with the rope pulley ratios, while the,

of the cop nose and cop bottom respectively.

For the purpose of avoiding excessive belt friction, a narrow intermediate belt pulley Z is preferably interposed between the two belt pulleys S, S The connection with the controlling mechanism of the machine is not shown in the drawings because it must be adapted to the various constructions of the machine and the controlling mechanism. It must so operate that at the beginning of the spinning, building of the cop bottom shall proceed at the slowest speed, and when this building has progressed to a sufficient extent, either the second speed is brought into action, which is sufiicient in the case of pin cops (shuttle cops), whereas for larger cops the belt shifter fork between the two belt pulleys'S, S, must be changed in order that the building of the cop nose shall proceed at the slower speed, while the cop bottom must be built at the faster speed.

In the same way instead of two speeds, three and more speeds of the drum shaft may be produced by arranging by the side of the second speed pulley a third or more pulleys of one and the same size on sleeves revolving one on the other, the front end of each sleeve carrying a further change rope pulley in addition to the change speed rope pulleys W, and W, for each belt pulley. A single endless rope runs around the rope pulley on the drum shaft and the rope pulleys for the first and second speeds, so that at all times only that rope pulley will be driven which belongs to the belt pulley on which. the driving belt is acting at the time. It will, however, never be necessary to provide more than three speeds.

This drive has the great advantage that the various speeds which are obtained by constant drives through shaft pulleys or countershaft pulleys, may now beobtained by means of the easily changed different sized rope pulleys, so that the spinning mill manager by mounting the corresponding change rope pulley is able to spin yarn at the speed which is most suited to its count and twist. He is therefore not limited to a speed which is not equally suitable for all counts and twists of yarn, as is the case when he has only one size of pulley at his disposal. This arrangement thus allows of running a machine provided with the improved driving mechanism, its highest output, by means of a single driving belt.

In special cases the spindles can be driven at three or more speeds; This method is illustrated in Fig. 2.

The first speed is produced by the fast pulley, S, by shifting the belt R by means of the fork G from the loose pulley L to the fast pulley, the fast pulley S driving the counter shaft V through pawl K and ratchet wheel K The ratchet wheel K, or the pawl K is thrown out of engagement automatically by the brake spring F in the usual manner, as soon as the shaft is driven at second speed.

The second speed is produced by the driving pulley 8, being brought into action by shifting the belt R, by means of the fork G-, the pawl being disengaged automatically by the brake spring because the shaft V is now running faster as the belt ft, is driven by the pulley cl, larger than the pulley (Z which drives the belt B. On the shaft at its front end there is located the change speed rim pulley W which serves to transmit these first two speeds by means of a rope to the driving pulley W of the drum shaft H of the machine. Then when the belt R is shifted on to the third speed pulley S the driving power is transmitted through the sleeve C to the larger change pulley W, and the endless rope on the pulley W of the drum shaft H.

By increasing the number of driving pulleys in the drive shown a fourth and any corresponding desired number of more speeds may be obtained in addition to the three speeds already provided.

For ordinary requirements even for spinning very delicate or difficult yarns, it will be found sufficient to provide three speeds the first speed of which commences at the beginning of the spinning operation and is continued until all the broken threads have been twisted together, whereupon the second speed is set in action to build the cop bottom.

When the building of the cop bottom has progressed to a sufficient extent, the third speed is set in action by the controlling mechanism, whereupon the belt is shifted over the second and third speed pulleys so as to cause the endless rope to drive the drum shaft faster or slower according to the change speed pulleys employed.

I claim:

1. The combination with the drum shaft of a ring spinning and twisting machine, of a countershaft, a belt pulley fixed on the latter, a sleeve loose on the countershaft, a pulley fixed on the sleeve, a driving belt shiftable from one pulley to the other, a rope change speed pulley fixed on the countershaft, a rope change speed pulley fixed on the sleeve, a rope pulley on the drum shaft, and an endless rope passing around all of the rope pulleys whereby the drum shaft is driven at the desired speed.

2. The combination with the. drum shaft ofa ring spinning and twisting machine, of

a driving shaft, a small and a large drive pulley thereon, a counter shaft, a ratchet wheel fixed on the latter, a first-speed pulley on the countershaft, a pawl on the first speed pulley to connect the latter to the ratchet wheel, a drive belt connecting said small pulley and the first speed pulley, a brake spring operable by an increase in speed of the countershaft to throw said pawl out of engagement with the ratchet wheel, a second speed pulley fixed on the counter shaft, a drive belt connecting the large drive pulley to the second speed pulley, a rope pulley fixed on the countershaft, a sleeve on the latter, a third-speed pulley fixed on the sleeve and adapted to be driven from the large drive pulley, a rope pulley fixed on the sleeve of larger diameter than the rope pulley on the countershaft, a rope pulley on the drum shaft, and an endless rope connecting all of the rope pulleys together.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

LUDWIG SCHORSCH.

WVitnesses:

AUGUs'r Fooenn, HANS ALLERANY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

